[RDBO] Doubt regarding proper module usage

[Nilson Santos Figueiredo Junior]

Hi,

I was trying to perform some fairly simple benchmarks comparing
Rose::DB::Object, Class::DBI and an in-house solution and came up with
some disappointing results from Rose::DB::Object.

I'd like to know if there's something I did wrong or that could be
done in a better way since RoseDB was only marginally faster (about
40%) than Class::DBI (vanilla, without prefetch, nothing).

The benchmark code follows:
<code>
use warnings;
use strict;

package CidadeDBI;
use base 'Class::DBI';

__PACKAGE__->connection("dbi:mysql:database=barcode;host=xxxxxxxx",
"root", "xxxxxxxx");
__PACKAGE__->table("cidade");
__PACKAGE__->columns(All => qw|id nome estado|);
__PACKAGE__->has_a(estado => 'EstadoDBI');
1;

package EstadoDBI;
use base 'Class::DBI';

__PACKAGE__->connection("dbi:mysql:database=barcode;host=xxxxxxxx",
"root", "xxxxxxxx");
__PACKAGE__->table("estado");
__PACKAGE__->columns(All => qw|id nome pais|);
__PACKAGE__->has_a(pais => 'PaisDBI');
1;

package PaisDBI;
use base 'Class::DBI';

__PACKAGE__->connection("dbi:mysql:database=barcode;host=xxxxxxxx",
"root", "xxxxxxxx");
__PACKAGE__->table("pais");
__PACKAGE__->columns(All => qw|id nome|);
1;

package RDBSetup;

use base 'Rose::DB';
use Rose::DB::Registry;

# Create a private registry for this class
__PACKAGE__->registry(Rose::DB::Registry->new);

# Register your lone data source using the default type and domain
__PACKAGE__->register_db(
        driver   => 'mysql',
        database => 'barcode',
        host     => 'xxxxxxxx',
        username => 'root',
        password => 'xxxxxxxx',
);

1;

package CidadeRDB;
use base 'Rose::DB::Object';

__PACKAGE__->meta->table('cidade');
__PACKAGE__->meta->columns(qw|id nome estado|);
__PACKAGE__->meta->primary_key_columns('id');
__PACKAGE__->meta->foreign_keys(
        estado_obj => {
                class       => 'EstadoRDB',
                key_columns => { estado => 'id' },
        }
);
__PACKAGE__->meta->initialize;
__PACKAGE__->meta->make_manager_class('cidade');

sub init_db { RDBSetup->new }

1;

package EstadoRDB;
use base 'Rose::DB::Object';

__PACKAGE__->meta->table('estado');
__PACKAGE__->meta->columns(qw|id nome pais|);
__PACKAGE__->meta->primary_key_columns('id');
__PACKAGE__->meta->foreign_keys(
        pais_obj => {
                class       => 'PaisRDB',
                key_columns => { pais => 'id' },
        }
);
__PACKAGE__->meta->initialize;
__PACKAGE__->meta->make_manager_class('estado');

sub init_db { RDBSetup->new }

1;

package PaisRDB;
use base 'Rose::DB::Object';

__PACKAGE__->meta->table('pais');
__PACKAGE__->meta->columns(qw|id nome|);
__PACKAGE__->meta->primary_key_columns('id');

__PACKAGE__->meta->initialize;
__PACKAGE__->meta->make_manager_class('pais');

sub init_db { RDBSetup->new }

1;

package main;
use warnings;
use strict;

use Benchmark 'cmpthese';

cmpthese(200, {
        CDBI    =>      \&CDBI,
        RDB             =>      \&RDB
});

sub RDB {
        for my $cidade (@{CidadeRDB::Manager->get_cidade(query=>[nome=> {
like => '%a%' },])}) {
                my $x = $cidade->id;
                my $y = $cidade->nome;
                my $z = $cidade->estado_obj;
                
                my $var = $cidade->estado_obj->pais_obj->nome;
        }
}

sub CDBI {
        for my $cidade (CidadeDBI->search_like({nome =>'%a%'})) {
                my $x = $cidade->id;
                my $y = $cidade->nome;
                my $z = $cidade->estado;
                
                my $var = $cidade->estado->pais->nome;

        }
}
</code>

Thanks for any advice.

-Nilson Santos F. Jr.


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